MYSQL file size not showing - php

Question

I'm learning how to build a photo_gallery using a PHP video book/tutorial. I was able to upload a photo, but in the MySQL database, it's not registering a size of the photo. It just says 0 (see image)
The instructor's Mysql gives the size of the file.
Any idea why the file size wouldn't show up in SQL?
UPDATE... This is the photograph class.
<?php
require_once(LIB_PATH.DS.'database.php');
class Photograph extends DatabaseObject {
protected static $table_name="photographs";
protected static $db_fields=array('id', 'filename', 'type', 'caption');
public $id;
public $filename;
public $type;
public $size;
public $caption;
private $temp_path;
protected $upload_dir="images";
public $errors=array();
protected $upload_errors = array(
UPLOAD_ERR_OK => "No errors.",
UPLOAD_ERR_INI_SIZE => "Larger than upload_max_filesize.",
UPLOAD_ERR_FORM_SIZE => "Larger than form MAX_FILE_SIZE.",
UPLOAD_ERR_PARTIAL => "Partial upload.",
UPLOAD_ERR_NO_FILE => "No file.",
UPLOAD_ERR_NO_TMP_DIR => "No temporary directory.",
UPLOAD_ERR_CANT_WRITE => "Can't write to disk.",
UPLOAD_ERR_EXTENSION => "File upload stopped by extension."
);
// Pass in $_FILE(['uploaded_file']) as an argument
public function attach_file($file) {
//perform error checking on the form parameters
if(!file || empty($file) || !is_array($file)){
//error: nothing uploaded or wrong usage
$this->errors[] = "No file was uploaded.";
return false;
} elseif($file['error'] !=0) {
//error: report what PHP says went wrong
$this->errors[] = $this->upload_errors[$file['error']];
return false;
} else {
//set object attributes to the form parameters.
$this->temp_path = $file['tmp_name'];
$this->filename = basename($file['name']);
$this->type = $file['type'];
$this->size = $file['size'];
//don't worry about saving anything to the database yet
return true;
}
}
public function save() {
// a new record won't have an id yet.
if(isset($this->id)) {
//really just to update the caption
$this->update();
} else {
//make sure there are no errors
//Can't save if there are pre-existing errors
if(!empty($this->errors)) {return false; }
//make sure the caption is not too long for the DB
if(strlen($this->caption) > 255) {
$this->error[] = "The caption can only be 255 characters long.";
return false;
}
//Can't save without filename and temp location
if(empty($this->filename) || empty($this->temp_path)){
$this->errors[] = "The file location was not available.";
return false;
}
//Determine the target_path
$target_path = SITE_ROOT .DS. 'public' .DS. $this->upload_dir .DS. $this->filename;
//Make sure a file doesn't already exist
if(file_exists($target_path)) {
$this->errors[] = "The file {$this->filename} already exists.";
return false;
}
//attempt to move the file
if(move_uploaded_file($this->temp_path, $target_path)) {
//success
//save a corresponding entry to the database
if($this->create()) {
//we are done with temp_path, the file isn't there anymore
unset($this->temp_path);
return true;
}
} else {
//failure
$this->errors[] = "The file upload failed, possibly due to incorrect permissions
on the upload folder.";
return false;
}
}
}
//common database methods
public static function find_all(){
return self::find_by_sql("SELECT * FROM ".self::$table_name);
}
public static function find_by_id($id=0) {
global $database;
$result_array = self::find_by_sql("SELECT * FROM ".self::$table_name." WHERE id={$id} LIMIT 1");
return !empty($result_array) ? array_shift($result_array) : false;
}
public static function find_by_sql($sql=""){
global $database;
$result_set = $database->query($sql);
$object_array = array();
while ($row = $database->fetch_array($result_set)) {
$object_array[] = self::instantiate($row);
}
return $object_array;
}
private static function instantiate($record){
$object = new self;
//$object->id = $record['id'];
//$object->username = $record['username'];
//$object->password = $record['password'];
//$object->first_name = $record['first_name'];
//$object->last_name = $record['last_name'];
foreach($record as $attribute=>$value) {
if($object->has_attribute($attribute)) {
$object->$attribute = $value;
}
}
return $object;
}
private function has_attribute($attribute) {
$object_vars = $this->attributes();
return array_key_exists($attribute, $object_vars);
}
protected function attributes() {
//return an array of attribute keys and their values
$attributes = array();
foreach(self::$db_fields as $field) {
if(property_exists($this, $field)) {
$attributes[$field] = $this->$field;
}
}
return $attributes;
}
protected function sanitized_attributes() {
global $database;
$clean_attributes = array();
//sanitize the values before submitting
//Note: does not alter the actual value of each attribute
foreach($this->attributes() as $key=> $value) {
$clean_attributes[$key] = $database->escape_value($value);
}
return $clean_attributes;
}
//replaced with a custom save()
//public function save() {
//return isset($this->id) ? $this->update() : $this->create();
//}
public function create() {
global $database;
$attributes = $this->sanitized_attributes();
$sql = "INSERT INTO ".self::$table_name." (";
$sql .= join(", ", array_keys($attributes));
$sql .= ") VALUES ('";
$sql .= join("', '", array_values($attributes));
$sql .= "')";
if ($database->query($sql)) {
$this->id = $database->insert_id();
return true;
} else {
return false;
}
}
public function update() {
global $database;
$attributes = $this->sanitized_attributes();
$attribute_pairs = array();
foreach($attributes as $key => $value) {
$attribute_pairs[] = "{$key}='{$value}'";
}
$sql = "UPDATE ".self::$table_name." SET ";
$sql .= join(", ", $attribute_pairs);
$sql .= " WHERE id=". $database->escape_value($this->id);
$database->query($sql);
return($database->affected_rows() == 1) ? true : false;
}
public function delete() {
global $database;
$sql = "DELETE FROM ".self::$table_name." ";
$sql .= "WHERE id=". $database->escape_value($this->id);
$sql .= " LIMIT 1";
$database->query($sql);
return($database->affected_rows() == 1) ? true : false;
}
}
?>

Answer 1

I think you forget to put size in your $db_fields
protected static $db_fields=array('id', 'filename', 'type', 'size', 'caption');
if you look at your attributes() function it checks to see if property_exists within the $db_fields and then assign the value to $attributes array and since 'size' was not within the array that you are checking against, it basically gets filtered out is what i am guessing:
protected function attributes() {
//return an array of attribute keys and their values
$attributes = array();
foreach(self::$db_fields as $field) {
if(property_exists($this, $field)) {
$attributes[$field] = $this->$field;
}
}
return $attributes;
}